Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.

A historic beacon built in the aftermath of the worst maritime disaster on the Great Lakes.

Kwanu'sila the Thunderbird has been silently watching over Chicago for more than 100 years (kind of).

Designed by Alfred Caldwel, this landscape showcases his vision of a native garden.

No one knows how many bodies are in this vault in a Chicago public park.

All of Chicago's wood-paved streets are long gone but two alleys remain.

This memorial plaque remembers a strangely shallow maritime disaster known as "Chicago's Titanic."

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

A monument to the art of slicing people open.

A lush indoor jungle fills this bustling Madrid transportation hub.

The earliest known map to show America, discovered by accident at a Paris bookshop.

One of Madrid's oldest trees, with a long and colorful history, resides in El Retiro Park.

Remains of the lost church hide beneath this Spanish Parliament building.

A classic advertising icon immortalized in regal bronze.

This private residence was the template for one of the most beloved television homes of all time.

A man-made island in scenic San Francisco Bay.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Cryptic messages embedded in the New York City sidewalk.

A popular European tradition makes its way to the states on one of America's most famous bridges.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Unable to build support structures on glaciers, the engineers for this tramway were forced to design a unique system.

The bronze uniforms commemorate the vital role of women during World War II.

This one has sailed five times as far as Sir Francis Drake's famous ship.